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Finding the Fourth Proportional to 30,370.40, 45,575.93 and 10,648.95

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Solution

The fourth proportional to 30,370.40, 45,575.93 and 10,648.95 is: 15,980.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,370.40 : 45,575.93 = 10,648.95 : x
  2. Step 2: Convert to fraction form
    30,370.40/45,575.93 = 10,648.95/x
  3. Step 3: Cross multiply
    30,370.40x = 45,575.93 × 10,648.95
  4. Step 4: Simplify right side
    30,370.40x = 485,335,746.53
  5. Step 5: Solve for x
    x = 485,335,746.53/30,370.40
  6. Step 6: Final answer
    x = 15,980.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.